1112120111551 has 4 divisors (see below), whose sum is σ = 1135782241632. Its totient is φ = 1088457981472.

The previous prime is 1112120111549. The next prime is 1112120111563. The reversal of 1112120111551 is 1551110212111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1112120111551 - 2¹ = 1112120111549 is a prime.

It is a super-2 number, since 2×1112120111551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112120111051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11831064970 + ... + 11831065063.

It is an arithmetic number, because the mean of its divisors is an integer number (283945560408).

Almost surely, 2^{1112120111551} is an apocalyptic number.

1112120111551 is a deficient number, since it is larger than the sum of its proper divisors (23662130081).

1112120111551 is an equidigital number, since it uses as much as digits as its factorization.

1112120111551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23662130080.

The product of its (nonzero) digits is 100, while the sum is 22.

Adding to 1112120111551 its reverse (1551110212111), we get a palindrome (2663230323662).

The spelling of 1112120111551 in words is "one trillion, one hundred twelve billion, one hundred twenty million, one hundred eleven thousand, five hundred fifty-one".